Valve



Patented June 13, 1933 UNITED STE JOHN G. KENNEDY, OF ELMIRA, NEVI"YORK, ASSIGNOR' TO THE KENNEDY VALVE MFG.

(#0., 015 ELIVIIRA, NEVI YORK, A. CORPORATION. OF NEW YORK VALVEApplication filed December 4,1930. Serial No. 500,102.

This invention relates to certain new and useful iinprovemen s in valvesand more particularly to means ror attaching the handleor wheel to thevalve stem, the object being to provide a valve stem with a plurality ofstraight flutes and the hub of the wheel with a plurality of straightflutes which are adapted to interlock with the flutes of the valve stemwhen the same are forced together so 1 as to form a positive connectionbetween the valve stem and valve, the same being held in interlockedposition by a nut mounted on the threaded portion of the valve stem.

Another object of my invention is to provide the stem and the here ofthe hub with flutes which are substantially V-shaped in cross section,the bore oi the handle being straight and the stem tapered; so that whenthe two are forced together, a wedging action is obtained between thetapering V- shaped face on the stem and t 10 straight on the wheel orhand e of the interlocking flutes.

A still further object of the invention is to provide a valve with ahandle and stem which can be readily connected and disconnected and onewhich can be manufactured very cheaply.

Other and further objects and advantages of the invention will behereinafter set forth and the novel features thereof defined by theappended claims.

In the drawing,

Figure 1 is a side elevation of a portion of a valve casing showing awheel constituting the handle secured in position on the valve stem inaccordance with my invention;

Figure 2 is an enlarged vertical section showing the wheel and handle ininterlocked position; 7

Figure 3 is a transverse section through. the wheel showing the straightflutes on the interior of the bore of tie wheel;

Figure l is a section taken on'line i of Figure2; I

Figure 5 is a detail section, partly in ele vation showing straightii-shaped flutes in the hub of the wheel and on the stem; and

Figure 6 is a section taken on line 66 of Figure 5.

In the drawing 1 indicates a valve casing which may be of theconventional form, 2 a valve stem and 3 the wheel or handle. The upperend of the valve stem 2 ispro'vided with a tapering portion havingtapering sub stantially V-shapcd flutes l, the flutes being radiallyarranged parallel with the central axis of the stem.

The wheel or handle 3 is provided with a straight bore 5 havingsubstantially ii-shaped.

straightlflutos 6, the flutes being arranged parallel with the centralaxis of the wheel so that when the handle is forced in position on thestem, the straight flutes of the bore of the wheel will pass between thetapering flutes on the tapering portion of the stem, whereby a wedgingaction is obtained so as to securely lock-the handle in position on thestem.

The end of the stem is reduced and threaded as shown at 7 and on whichis adapted to work a hexagonal nut 8 for locking the handle and stemtogether whereby the two members can be forced together in such a mannerthat all lost 'motion is prevented and an exceedingly tightcoupling isformed between the valve and valve wheel or handle.

In the modification shown in Figure 5, 9 indicates a valve stem which isprovided with V-shaped flutes 10 adjacent its end between which areadapted to extend the V-shaped flutes 11 formed on the interior of thehub 12 of a hand wheel 13, said stem being re duced at 14 on which ismounted a hexagonal nut 15 for locking the V-shaped flutes of the handlebetween the Vshaped flutes of the stem so as to form a rigid connectionbetween the two. 7

In Figure 1 to 4 I haveshown an improved method of attaching handles tovalve stems in which the valve stem adjacent its free end is providedwith a tapered truncated cone portion having radially arranged taperingflutes which are substantially V-shaped in cross section and are adaptedto cooperate with straight flutes formed on the bore of a hub of awheel, the tapering flutes being par allel with the central axis of thestem and the straight flutes with the hub of the handle, whereby Iprovide a method of attaching a handle to a valve stem in such a mannerthat his when the two are forced together, a wedging action is obtainedso as to form a rigid connection between the valve stem and handlewhereby the wear caused by the removal and insertion of the handle canbe taken care of, as by operating the nut on the valve stem any wearwill be compensated for by the movement of the inclined "face of thestem and the straight face of the Wheel or handle.

In both forms I connect the handle to the valve stem by providing thehandle and valve stem with V-shaped flutes which interlock with eachother and are secured in interlocked position by a nut working on the reduced threaded end of the valve stem.

What I claim is:

1. In a valve, a valve stem having a tapering portion adjacent its freeend provided with tapering flutes substantially V-shaped in crosssection, the free end or said valve stem being reduced and threaded, awheel having a cylindrical bore ot the same diameter throughout itslength provided with straight flutes substantially V-shaped in crosssection, the flutes being arranged parallel with the central axis of thebore and a nut working on the threaded end of said valve stem forforcing the straight flutes of the wheel between the tapering flutes ofthe valve stem and for locking said valve stem and wheel together.

2. A valve having a valve stem provided with a tapering portion adjacentits free end and a threaded portion at its free end, the taperingportion of said valve stem being provided with tapering flutes, a handwheel having a cylindrical bore of the same diameter throughout itslength adapted to extend over the taperin portion of said stern, saidbore having straight flutes adapted to interlock with the taperingflutes oi": the stein the tapering portions of the flutes of the stembeing arranged to interlock with the straight flutes oi the bore of thewheel and a nut work ing on the threaded end of said stem engaging saidwheel for forcing the straight flutes ot the wheel and the taperingflutes of the stem in frictional engagement with each other.

3. As a new article of manufacture, a valve having a stem provided witha tapering portion said tapering portion being provided with taperingflutes having longitudinally converging side walls, a handle or wheelhaving a bore of the same diameter throughout its length provided withstraight flutes having longitudinally disposed parallel side wallsadapted to interlock with the tapering flutes oi the stem, and a nutmounted on said stein for locking said handle or wheel in position onsaid stem.

In testimony whereof I hereunto affix my signature.

JOHN G, KENNEDY.

